Perhitungan Kimia
Quiz
•
Chemistry
•
11th Grade
•
Easy
Muhamad Nurhadi
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15 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Aluminium bereaksi dengan asam klorida menghasilkan larutan aluminium klorida dan gas hidrogen.
Al (s) + 4 HNO3 (aq) --> Al(NO3)3 (aq) + NO (g) + 2 H2O (l)
Jika 2 mol HNO3 bereaksi dengan aluminium, berapa mol gas NO yang dihasilkan adalah ....
8 mol
4 mol
2 mol
1 mol
0,5 mol
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui persamaan reaksi:
C (s) + 2 H2 (g) --> CH4 (g)
Jika sejumlah karbon tepat bereaksi dengan 2,24 L gas H2 pada STP, jumlah partikel gas CH4 yang dihasilkan adalah .... molekul
3,01 x 1020
3,01 x 1021
3,01 x 1022
6,02 x 1024
12,04 x 1024
3.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
4 mol aluminium beraksi dengan 4 mol oksigen membentuk aluminium oksida seturut reaksi berikut.
4Al (s) +3O2 (g) → 2Al2O3 (s)
Pernyataan berikut yang benar adalah … .
(Ar Al = 27, O = 16)
Aluminium sebagai pereaksi pembatas
Oksigen sebagai reaksi pembatas
Dihasilkan 4 mol Al2O3
Tidak terjadi reaksi karena dibutuhkan 8 mol alumunium
Oksigen yang tidak bereaksi sebanyak 1 mol
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Nilai dari tetapan avogadro adalah..
6,02 x 10^23
60,2 x 10^23
6,02 x 10^22
60,2 x 10^22
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berapa massa molekul relatif (Mr) dari C2H5OH? Ar C= 12, O= 16, H= 1
45
46
29
36
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hitunglah berapa mol dari 4 gram zat jika diketahui Mr zat = 40 g/mol
0,01
0,1
0,001
1,0
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui reaksi:
CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(1) + CO2(g)
Jika 5 gram batu kapur direaksikan dengan asam klorida encer, maka pada keadaan STP akan diperoleh gas sebanyak … Liter
(Ar Ca = 40, Cl = 35,5, O = 16, C = 12 dan H = 1)
1,12
2,24
4,48
5,60
11,2
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